Datasheets and public prices for every module are in the ERDI laser rangefinder model list.
Live decoder: https://erditech.github.io/lrf-uart-protocol-decoder/
Decode laser rangefinder module UART frames in the browser or from the command line. Connect a module with WebSerial (Chrome / Edge) or paste captured hex. Built-in profiles: ERDI 905 nm modules (family B 5C stream in centimetres and millimetres, LRF1500H 5-byte frame, family A 55 AA replies) and Benewake TFmini / TF-Luna style 9-byte frames. Useful for debugging a LiDAR distance sensor over serial, checking checksums, finding the unit of a distance field, and writing your own driver.
- Streaming decoder with resync: garbage bytes are skipped, partial frames wait for the next chunk
- Per-profile checksum, byte order and unit; out-of-range markers reported as such
- Web UI (
docs/index.html) with WebSerial connect and a paste-hex mode; no install, no server, no tracking - Python CLI (
python/lrf_decoder.py) for captures and live ports - Node and pytest test suites using the golden frames printed in the ERDI manuals
| Profile | Frame | Checksum | Unit | Default baud |
|---|---|---|---|---|
erdi-b-4-cm |
5C lo hi chk (LRF50H, LRF100H, LRF200H, LRF300H, LRF600H) |
~(lo+hi) |
centimetres | 460800 |
erdi-b-4-mm |
5C lo hi chk (LRF22VB, LRF50VB) |
~(lo+hi) |
millimetres | 460800 |
erdi-b-5-cm |
5C lo mid hi chk (LRF1500H) |
~(lo+mid+hi) |
centimetres | 460800 |
erdi-a |
55 AA fn STA FF DH DL SUM (LR1000E2 ... LR2000E4, LRF1200A1, LRF3000A1, SPD1200N*) |
sum of all 7 preceding bytes | metres x 10 | 115200 |
benewake-tf-9 |
59 59 DL DH SL SH TL TH chk |
sum of first 8 bytes | centimetres | 115200 |
5C 02 11 EC decodes to 43.54 m with erdi-b-4-cm and 4.354 m with erdi-b-4-mm. Always select the profile by model name.
Browser: open the live page, choose a profile, press Connect serial port (needs a secure context such as GitHub Pages or localhost), or paste hex and press Decode.
Python:
python python/lrf_decoder.py --profile erdi-b-4-cm "5C 02 11 EC"
python python/lrf_decoder.py --profile erdi-a --file capture.bin
pip install pyserial && python python/lrf_decoder.py --profile erdi-b-4-mm --port COM5JavaScript:
import { Decoder } from "./docs/decoder.js";
const d = new Decoder("erdi-b-4-mm");
d.push(chunk).forEach((f) => console.log(f.distance_m));node --test tests/ # Node 20+
pip install pytest && python -m pytest -q pythonAdd an entry to PROFILES and a branch in tryFrame (JS) / decode (Python), then add a golden-frame test. Only use values from the manufacturer's manual and say which manual in the PR.
- ErdiTech/erdi-lrf-drivers: Python, Arduino, ROS 2 drivers and protocol documents for ERDI modules
- laser-rangefinder-module-database: open dataset of laser rangefinder specifications
- awesome-laser-rangefinder: curated list of laser rangefinder resources
- ERDI module datasheets, wiring diagrams and prices — the modules these tools target
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MIT — see LICENSE.